Forensics - Hair

What are class characteristics in forensic evidence?

• Properties of evidence that can be linked to a single source.

• Properties of evidence that can only be associated with a group and not a single source.

• Unique features of evidence that identify an individual item.

• Characteristics that are irrelevant to forensic analysis.

What is the significance of the medulla in hair analysis?

• It provides information about the color of the hair.

• It can provide information about the species of origin and can vary in appearance among different individuals.

• It determines the length of the hair strand.

• It indicates the age of the individual.

What is the function of the hair follicle?

• It produces sweat to cool the body.

• It is responsible for anchoring the hair into the skin.

• It helps in the absorption of nutrients from the skin.

• It protects the scalp from UV radiation.

What protein is the hair shaft primarily composed of?

• Collagen

• Elastin

• Keratin

• Actin

What is the function of the medulla in hair structure?

• The medulla provides color to the hair.

• The medulla may help provide structure and flexibility to the hair.

• The medulla is responsible for hair growth.

• The medulla protects the hair from damage.

In the pencil analogy, what does the cuticle represent?

• The lead inside the pencil.

• The eraser at the end of the pencil.

• The paint on the surface of the pencil.

• The wood that encases the pencil.

How can the root of a hair help in forensic investigations?

• It can provide a source of nuclear DNA for individual identification.

• It can indicate the hair color of the individual.

• It can determine the age of the individual.

• It can reveal the geographical origin of the individual.

How can hair be used in forensic investigations?

• Hair can be used to link a suspect to a crime scene or victim through comparison and analysis.

• Hair can be used to determine the age of a suspect.

• Hair can be used to identify the exact time a crime was committed.

• Hair can be used to analyze the psychological state of a suspect.

What is the role of the cortex in hair?

• It provides moisture and shine to the hair.

• It protects the hair from UV damage.

• It provides strength, color, and texture to the hair.

• It regulates the temperature of the scalp.

What are the three main layers of hair?

• Cuticle, cortex, and medulla

• Dermis, epidermis, and hypodermis

• Follicle, shaft, and bulb

• Root, shaft, and tip